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Question 43Which of the following is NOT a risk factor for gestational trophoblastic disease?A) Extreme maternal age (<20 or >40 years)B) Previous molar pregnancyC) Asian ethnicityD) MultiparityE) Blood group AAnswer: D) MultiparityExplanation: Multiparity is not a risk factor for gestational trophoblastic disease. In fact, nulliparity is associated with an increased risk. The other options are all recognized risk factors.